Why do airplanes have the cruising altitude in the stratosphere?

It is important for scientists to have a standard system of naming compounds and other chemical procedures to avoid ambiguity in the nomenclature of chemical compounds and procedures.

Chemicals may be referred to by various names among various scientists in different places. These different names creates confusion when scientists present their discoveries to other scientists outside their locality.

Therefore, it is imperative that a unified and standard system of nomenclature should be devised so that all scientists can have the same name for compounds. This reduces ambiguity associated with the nomenclature of chemical substances and procedure.

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Answer:

People with a nasal voice can sound as though they're speaking through a clogged-up or runny nose, which are both possible causes. Your speaking voice is created when air leaves your lungs and flows upward through your vocal cords and throat into your mouth. The resulting sound quality is called resonance. (i hope i helped ya )

Explanation:

styrofoam: 14 degrees

metal: 55 degrees

paper: 25 degrees

plastic: 28 degrees

if they are asking for temperature change, just subtract the last number from the first number to get the difference :)

Answer:

styrofoam would be 14°

metal would be 55°

paper would be 25°

plastic would be 28°

Explanation:

im pretty sure you just take the biggest number and subtract the smallest number. to get how much it has changed.

The rock layer which marks the end of the dinosaurs is: C. KT Boundary layer.

A rock can be defined as a solid material containing minerals, which are naturally formed through the following processes:

Basically, a rock comprises of various layers which marks the age of both living and nonliving organisms, these includes:

I. Burgess Shale layer.

II. Mesozoic Layer.

III. KT Boundary layer.

Dinosaurs refers to a taxa of carnivorous or herbivorous archosaurian reptiles that are often very large and belongs to the Mesozoic era.

Basically, the Mesozoic Layer is a rock layer which marks the period when dinosaurs were still roaming the earth some million years ago.

However, dinosaurs went into extinction at the KT Boundary layer and as such it is a rock layer which marks the end of the dinosaurs.

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Answer:

Natural nitrogen (7N) consists of two stable isotopes: the vast majority (99.6%) of naturally occurring nitrogen is nitrogen-14, with the remainder being nitrogen-15.

The volume of these objects can be found by water displacement. A volume of water sufficient to cover the object is placed in a graduated cylinder and the volume read. The object is added to the cylinder and the volume read again.

Answer:

Displacement is a method used for measuring the volume of an irregular solid and it is in cubic units.

One of the ions has a positive charge (called a cation) and the other has a negative charge (termed anion). Salt is an ionic compound, consisting of a crystal, lattice structure of the two ions Na+ and Cl-.

Answer:

Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.

Explanation:

Answer:

Penta hydrogen chlorine

Explanation:

they are ploy atomic elements

Answer:Mixture comprises two or three compounds that aren't fused chemically. They have no physical interactions

and A solution contains two substances that are chemically mixed to form a new compound.

Explanation:

creating geographic maps of continents and countries

Jonah is filling out paperwork for insurance and in the “applicant occupation” space he writes cartographer so, his job is creating geographic maps of continents and countries, hence option C is correct.

A person who draw and produce a map is a cartographer. Cartography is  the art and science of graphically representing a geographical area, usually on a flat surface such as a map or chart.

This may involve the superimposition of political, cultural, or other nongeographical divisions onto the representation of a geographical area.

A person whose work is making maps or charts is a cartographer.   An example of a cartographer is Claudius Ptolemy and his book Geographica . Anaximander was the first  ancient Greeks to draw the map of known world.

Hence, cartographer creates the geographical maps.

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The Correct choice is : C

Athlete's foot is one of the common disease caused by a fungus !

Answer:

over land is the correct ☑ answer plz mark me as brainliest

have a great day ahead

Answer:

6.5 – 8.5

Explanation:

Answer:

the most common oxidation no.of manganese is + 2 + 3 + 4 + 6 + 7

Explanation:

Answer:

1 taza = 250 ml eso creo

Explanation: Eso creo jejejejeje.

Answer:

Two Electrons.

Explanation:

Helium is the second element of the periodic table and thus is an atom with two protons in the nucleus. Most Helium atoms have two neutrons in addition to the protons. In its neutral state, Helium has two electrons in orbit about the nucleus. Model of a helium atom's nucleus with two protons and two neutrons.

Hope This Helps!

Answer:

The answer to your question is two electrons.

Explanation:

In its neutral state, Helium has two electrons in orbit about the nucleus.

Answer:

False

Fossil fuels add carbon dioxide to the atmosphere not oxygen

The  Great Fire of 1910 that burned through parts of North Idaho, western Montana, eastern Washington, and southeastern British Columbia serves as a model of conduction as the fire spread from tree to tree without actual movement of the trees away from their position but as a result of contact between the burning flames in the trees.

Heat transfer processes refers to the process by which heat energy is transferred from one point to another within a medium of between two points.

There are three processes of heat transfer, namely:

Conduction is a process of heat transfer in which is transferred from one point to another in a medium without the actual movement of the particles of that medium.

During conduction, the particles of the medium vibrate about a mean position as they acquire heat. This heat energy is then transferred from that particle to the neighboring particle as they particles are in close contact. Hence the heat is transferred from one particle to the next.

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Answer:

g(x) has the greater slope

Answer:The mass of scheelite having one million oxygen atoms is. Explanation: We are given: Number of oxygen atoms = (million atoms). According to mole .

Explanation:

Answer:

solid

Explanation:

because solid has a definite shape and volume

Answer:

Liquid

Explanation:

This is because the intermolecular forces of attraction are strong enough to hold the molecules together but not so strong as to fix them into definite positions (as in solids). Instead, they possess fluidity and hence no definite shape.

Answer:

cellular respiration

Explanation:

Summary. Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP

Explanation:

[tex]pressure \: \alpha \frac{1}{volume} [/tex]

P1V1 = P2V2

205 (4) = P2 (12)

[tex]P2 = \frac{205 \times 4}{12} [/tex]

P2= 820/12

P2= 68.3 KPa

The pressure in the container after the expanssion of gas, if the temperature remains constant is 68.3 kPa.

According to the Boyle's Law, at constant temperature pressure of any gas is inversely proportional to the volume of the gas, i.e.

P ∝ 1/V

Required equation for the calculation of the pressure is:

P₁V₁ = P₂V₂, where

P₁ = initial pressure = 205 kPa

V₁ = initial volume = 4 L

P₂ = final pressure = ?

V₂ = final volume = 12 L

On putting all these values on the above equation, we get

P₂ = (205)(4) / (12) = 68.3 kPa

Hence resultant pressure is 68.3 kPa.

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Answer:

hydroelectric

Explanation:

Answer:

There is no hydrogen in the first half reaction

Answer:

i.Electron should be 19,Proton should also be 19,Neutron should be 20

ii.The outer electron shell should have 9 electrons

iii.Electron Configuration [Ar] 4s¹

Answer:

The are mainly three kinds of subatomic particles in an atom:

1) Electrons (negatively charged particles)

2) Protons (positively charged particles)

3) Neutrons (neutral particles)

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Hope this helped!